ASTROSAT CZTI

Data Quality Report

Orbit 12449

Creation date: 2024-06-27T16:27:32.599849
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_174T01_9000001850_12449cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12449cztM0_level2_quad_clean.evt
Size (bytes)533,157,12069,716,160
Size508.5 MB 66.5 MB
Events in quadrant A4,624,719422,143
Events in quadrant B3,857,351415,234
Events in quadrant C3,036,266428,921
Events in quadrant D4,195,774399,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185342
B0154331
C0131031
D0167651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375831.301961%
B63753074.815686%
C6375170.266667%
D63751912.996078%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7556 6376 1 1 0.01% 0.02%
B 7556 6377 212 212 2.81% 3.32%
C 7556 6377 0 0 0.00% 0.00%
D 7556 6377 170 170 2.25% 2.67%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 23 465114 2891.53 790 775 160.6
A 13 251 374871 2329.57 790 775 160.6
A 1 162 239340 1485.59 790 775 160.6
B 4 239 615814 4115.58 787 772 149.4
B 11 51 58583 386.84 787 772 149.4
B 0 187 46952 309.02 787 772 149.4
C 15 208 9049 45.96 776 784 179.8
C 13 61 5746 27.59 776 784 179.8
C 3 202 1872 6.05 776 784 179.8
D 1 52 994019 5475.52 753 731 181.4
D 13 104 205070 1126.42 753 731 181.4
D 5 184 55278 300.69 753 731 181.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter